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NXP Semiconductors MC32PF1550A9EPR2
- Part No.:
- MC32PF1550A9EPR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
MC32PF1550A9EPR2.pdf
- Description:
- POWER MANAGEMENT IC 3 BUCK REGS
- Quantity:
- Payment:
- Shipping:
Inventory:2,885
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Product details
Overview
MC32PF1550A9EPR2 from NXP Semiconductors is a power management IC (PMIC) engineered for i.MX RT1050 application processors in consumer-grade portable and IoT systems. It integrates three 1.0 A buck converters, three LDOs (300 mA/400 mA), RTC supply (VSNVS), DDR reference voltage (VREFDDR), and a programmable linear battery charger supporting 100–1000 mA charge current and JEITA-compliant thermal regulation.
For engineers reviewing the MC32PF1550A9EPR2 datasheet, MC32PF1550A9EPR2 pinout, MC32PF1550A9EPR2 application, or MC32PF1550A9EPR2 equivalent, key selection considerations include its −40 °C to +85 °C operating range, OTP-configurable startup sequence, I²C-controlled dynamic voltage scaling on SW1/SW2, and integrated 50 mΩ battery isolation MOSFET for no-battery operation.
Technical Context
The MC32PF1550A9EPR2 implements a multi-rail power architecture with independent control of three buck regulators (SW1–SW3), each featuring soft-start, programmable output voltage, and selectable operating modes (forced PWM or adaptive variable-frequency). SW1 and SW2 support dynamic voltage scaling for ARM core and digital domain supply, while SW3 delivers fixed 1.8–3.3 V outputs for peripherals.
Its analog subsystem includes thermistor-based JEITA battery monitoring, a 2.7 V internal bias regulator (INT2P7), USB_PHY LDO (60 mA, 55–75 dB PSRR), and a programmable LED driver with 0.5–256 Hz frequency and 10–100% duty cycle. All regulator settings, timing, and charging parameters are stored in one-time-programmable (OTP) memory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range (VBUSIN) | 4.1 V to 6.0 V - supports USB bus or AC adapter input with 22 V transient withstand capability |
| Buck converters (SW1/SW2) | 0.6 V–1.3875 V @ 1.0 A with 12.5 mV steps - enables precise core voltage control for i.MX RT1050 ARM Cortex-M7 |
| Buck converter (SW3) | 1.8 V–3.3 V @ 1.0 A in 100 mV steps - supplies stable IO/peripheral rail without DVS |
| LDO regulators | LDO1/LDO3: 0.75–1.5 V or 1.8–3.3 V @ 300 mA; LDO2: 1.8–3.3 V @ 400 mA - supports memory, sensors, and interface logic |
| Battery charger | Linear Li-ion/Li-Po support; 100–1000 mA programmable charge current; 3.5–4.44 V CV range - enables safe, configurable single-cell charging |
| Operating temperature | −40 °C to +85 °C - qualified for consumer portable and edge IoT applications |
| I²C interface | Standard-mode (100 kHz) and fast-mode (400 kHz) compatible - allows real-time processor control and event reporting |
Pinout & Package
MC32PF1550A9EPR2 is housed in a 40-pin QFN package (5.0 mm × 5.0 mm, exposed pad), optimized for thermal performance and space-constrained wearable and IoT PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW1FB / SW2FB / SW3FB | Buck feedback inputs | Enable closed-loop regulation of respective output voltages via external resistor dividers |
| VLDO1 / VLDO2 / VLDO3 | LDO output terminals | Deliver regulated low-noise power to sensitive analog/digital subsystems (e.g., sensors, audio codec) |
| VSNVS | RTC backup supply | Provides 3.0 V @ 2.0 mA to maintain real-time clock and SRAM during main power loss |
| VREFDDR | DDR memory reference | Supplies 0.5–0.9 V @ 10 mA for DDR impedance calibration and termination |
| CHGB | LED driver anode input | Drives status LED from VSYS with programmable current (4–8 mA), frequency (0.5–256 Hz), and ramp timing |
| THM | Thermistor interface | Connects NTC thermistor to ground for JEITA-compliant battery temperature monitoring and charge control |
| EPAD (Pin 41) | Exposed thermal pad | Must be soldered to PCB ground plane to achieve RΘJB = 8.8 °C/W and sustain full 1.0 A buck load capability |
Key Features
| Feature | Design Value |
|---|---|
| OTP-configurable power sequencing | User-defined startup/shutdown order, timing, and soft-start delays stored permanently for repeatable system boot behavior |
| DVS on SW1 and SW2 | Real-time voltage adjustment under processor control to optimize power vs. performance trade-offs in active and idle states |
| Integrated battery path management | 50 mΩ isolation MOSFET enables operation with zero or depleted battery; supports battery supplement mode when VSYS < VBATT |
| JEITA-compliant thermal charging | Programmable thresholds at −10 °C, 0 °C, 10 °C, 45 °C, 55 °C, and 60 °C with 0.5–5.0 °C hysteresis for safe Li-ion charge profile enforcement |
| Low-power modes | ULP mode quiescent current ≤1.0 μA (buck), Low-power mode LDO IQ < 1.5 μA - extends battery life in sleep/watchdog states |
Applications
| Smart Wearables | Industrial IoT Edge Nodes |
|---|---|
|
Use Scenario: Compact fitness tracker with ARM Cortex-M7 MCU, OLED display, and BLE radio operating on single-cell Li-Po. IC Role / Device Role / Timing Role: Primary PMIC delivering core (1.1 V), digital (1.8 V), and peripheral (3.3 V) rails; managing battery charge/discharge and RTC backup. Use Value: Enables >7-day runtime via ULP buck mode (1.0 μA IQ) and seamless transition between battery-only and USB-powered operation. |
Use Scenario: Battery-backed environmental sensor node deployed in remote locations with cellular/NB-IoT uplink. IC Role / Device Role / Timing Role: System power hub supplying i.MX RT1050, LPDDR3, and RF transceiver; performing JEITA-validated charging and thermal shutdown. Use Value: Ensures reliable field operation across −40 °C to +85 °C with automatic battery overcurrent protection (2.0–4.0 A threshold) and 22 V surge tolerance on VBUSIN. |
| POS Terminals | E-Readers |
|
Use Scenario: Handheld point-of-sale terminal using i.MX RT1050, capacitive touchscreen, and contactless payment module. IC Role / Device Role / Timing Role: Centralized power controller providing regulated rails for CPU, display, secure element, and NFC antenna driver. Use Value: Reduces BOM count by integrating DDR VREF, USB PHY LDO, coin cell charger, and programmable LED indicator in one QFN5x5 package. |
Use Scenario: Solar-charged e-reader with EPD display, eMMC storage, and Wi-Fi connectivity operating in intermittent sunlight. IC Role / Device Role / Timing Role: Manages dual-input power (solar charger + Li-Po), regulates low-noise display bias rails, and maintains RTC during deep sleep. Use Value: Supports battery supplement mode to extend runtime during low-light conditions while maintaining 3.0 V VSNVS for persistent timekeeping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2662GQ-Z | Single-cell linear charger + dual buck (1.2 A/1.0 A); no LDOs, no DDR VREF, no RTC supply | Lacks integrated LDOs and VREFDDR; requires external regulators for memory/peripherals | Choose when only basic charging + two rails are needed and board space permits discrete LDOs |
| TPS65136RGER | Triple-output PMIC (dual buck + LDO); no battery charger, no I²C, no OTP configuration | Fixed-function design; no runtime configurability or JEITA thermal control | Prefer for cost-sensitive, non-battery applications where firmware control and charging are unnecessary |
Compared with MP2662GQ-Z and TPS65136RGER, MC32PF1550A9EPR2 uniquely combines full-system power delivery (core, memory, IO, RTC, USB PHY), programmable battery management, and OTP-based customization-making it optimal for i.MX RT1050-based consumer IoT designs requiring minimal external components and robust field reliability.
Availability
MC32PF1550A9EPR2 is available at Aetrix Electronics and suitable for smart wearables, industrial IoT edge nodes, and handheld POS terminals requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MC32PF1550A9EPR2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor leader specializing in secure, high-performance processing and connectivity solutions for automotive, industrial, and IoT markets.
The PF1550 product line was designed specifically to simplify power architecture for NXP's i.MX application processors-including the i.MX RT1050-by consolidating buck, LDO, battery, and system management functions into a single, OTP-configurable IC.
FAQ
What is the operating temperature range for MC32PF1550A9EPR2?
The MC32PF1550A9EPR2 is rated for −40 °C to +85 °C ambient operation, qualifying it for consumer portable and edge IoT applications. This range is explicitly defined in Table 1 of the datasheet for part number MC32PF1550A9EP (the base variant), and the R2 tape-and-reel suffix does not alter thermal specifications. Junction temperature must remain below 125 °C under all operating conditions.
Does MC32PF1550A9EPR2 support dynamic voltage scaling (DVS)?
Yes, MC32PF1550A9EPR2 supports DVS on buck regulators SW1 and SW2 via I²C commands. This allows real-time adjustment of output voltage (e.g., 0.6 V–1.3875 V in 12.5 mV steps) to match CPU workload, reducing dynamic power consumption in i.MX RT1050 systems. DVS is disabled on SW3, which provides fixed 1.8–3.3 V outputs.
How is the battery charging profile configured on MC32PF1550A9EPR2?
Charging parameters-including constant-voltage (3.5–4.44 V), constant-current (100–1000 mA), termination current (5–50 mA), and JEITA temperature thresholds-are programmed via I²C and permanently stored in OTP memory. The MC32PF1550A9EPR2 implements hardware-enforced safety limits, including battery overcurrent protection (2.0–4.0 A) and thermal regulation at 80/95/110 °C.
What package type and pin count does MC32PF1550A9EPR2 use?
MC32PF1550A9EPR2 uses a 40-pin QFN package measuring 5.0 mm × 5.0 mm with an exposed thermal pad (EPAD). Pinout is identical across all PF1550 variants, including dedicated terminals for buck feedback (SW1FB–SW3FB), LDO outputs (VLDO1–VLDO3), DDR reference (VREFDDR), RTC supply (VSNVS), and thermistor interface (THM).
Can MC32PF1550A9EPR2 operate without a battery connected?
Yes, MC32PF1550A9EPR2 supports no-battery operation via its integrated 50 mΩ battery isolation MOSFET. When VBATT is absent or discharged, the PMIC routes power from VBUSIN or VSYS to system rails while maintaining VSNVS (3.0 V RTC supply) and enabling all regulators. The coin cell charger (LICELL) further ensures RTC retention during extended main power loss.
MC32PF1550A9EPR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Embedded Systems, Low-Power IoT, Mobile/Wearable Devices
- Current - Supply:
- -
- Voltage - Supply:
- 4.1V ~ 6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-HVQFN (5x5)
MC32PF1550A9EPR2 FAQ
1.How can I place an order for MC32PF1550A9EPR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC32PF1550A9EPR2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC32PF1550A9EPR2 reliable?
The price and inventory of MC32PF1550A9EPR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC32PF1550A9EPR2 is usually 5 days.
3.What payment methods are accepted for MC32PF1550A9EPR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC32PF1550A9EPR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC32PF1550A9EPR2?
MC32PF1550A9EPR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC32PF1550A9EPR2 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC32PF1550A9EPR2?
For technical support, including MC32PF1550A9EPR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC32PF1550A9EPR2 requirements.
6.How does Aetrix verify that MC32PF1550A9EPR2 is sourced from the original manufacturer or authorized distributors?
All MC32PF1550A9EPR2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC32PF1550A9EPR2 meets industry standards.
7.What is the process for return or replacement of MC32PF1550A9EPR2?
All MC32PF1550A9EPR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC32PF1550A9EPR2, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC32PF1550A9EPR2 part is unused and in its original packaging.
Return procedure for MC32PF1550A9EPR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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